As the co-founder of Cisco and Urban Decay, Sandy Lerner has made an impact in the worlds of technology and cosmetics, and now she is working to change the country's food production infrastructure through organic and sustainable farming.

For our 'If I Knew Then, What I Know Now' series, serial entrepreneur Steve Blank discusses the importance of following your passion, the importance of family and the legacy he hopes to leave behind for future entrepreneurs.

The fashion-retail founder explains why entrepreneurs shouldn't be afraid to veer off of the prescribed track, why it is okay for them to make mistakes and how founders should strive to be like Indiana Jones.

James Dyson isn't just about vacuums. The inventor is also a pioneer in wearable gadgets and green technology. Through his experiences, the entrepreneur learned the one person he needed to believe in his technology was himself.